Main Characteristics
Total mass 415 g
Power consumption 87.2 mv
Data capacity 194.6 kbit/day
1362.2 kbit/seven days
Temperature Sensor
Principle of operation capacitance-type
Range 1 to 350 K
Resolution < 0.1° C
Accuracy < 0.5° C
The sensor is also used for temperature compensation during surface
measurements of pressure and humidity.
Pressure Sensor
Principle of operation silicon, capacitance-type
Range 0 to 20 mbar
Resolution 0.005 mbar
Accuracy 0.02 mbar
The sensor is mounted inside the probe on a circular plate.
Relative Humidity Sensor
Principle of operation capacitance-type
Range 0 to 100 percent
Resolution < 1 percent up to 20° C
The sensor is mounted on the upper end of the boom.
Optical Depth Sensor
Principle of operation comparison of the intensity of the
direct and scattered sunlight
Range 0.1 to 0.5 µ m
Resolution 0.1 percent
The sensor is mounted on the outside top of the station.
Ion Anemometer
Principle of operation atmosphere ionization by Ni63
isotopes, ion current detection
Range 0.3 to 30 m/s
Resolution 0.2 m/s
The sensor is mounted at the upper end of the boom.
Principle of operation magnetic/electrical with feedback
Range ± 50 g
Resolution > 10-3 g
The instrument is placed inside the station.
Absolute Pressure Sensor
Principle of operation metal barocase with capacitance-type
transducer
Range 1 X 10-3 to 10 mbar
Accuracy 1 X 10-3 mbar
Modes of operation
1 - height measurement
2 - as a pressure-sensor for atmospheric measurements on the surface
Temperature Sensor
With a platinum wire
Range -196 to +500° C
Resolution 0.1°
The sensor is mounted on the boom.
With a nickel foil
Range -196 to +120° C
Resolution 0.2°
The sensor is mounted on the boom.
Objective
Measurements of the elemental composition (beginning with carbon) of
martian soils
Method
Recording of secondary neutrons scattered on nuclei of martian
soil elements, excitation of X-ray fluorescence of a sample
Main Characteristics
Energy range
Alpha-particles 0.6 keV to 6.5 MeV
Protons 0.6 keV to 6.5 MeV
X-rays 1 to 22 keV
Dimensions
Sensor unit D 52 X 50 mm
Electronics unit 70 X 100 X 80 mm
Booms 270 mm
The sensor unit is mounted on the boom.
OPTIMIZM - Seismometer, Magnetometer and Inclinometer
Hardware
The OPTIMIZM instrument consists of a three-component
magnetometer with an inclinometer on the boom, a vertical-component
seismometer, and an electronics unit (inside the small station).
Magnetometer
Main Characteristics
Resolution 0.25 nT
Dynamic range 8000 nT
Measurement frequency
Three-component measurements every 30 s
Measurements of magnetic-field
variations within 0.01 to 1 Hz
Seismometer
Main Characteristics
Noise level (period > 20s) 1 nm
Modes of operation
Movement velocity measurement
Frequency range 0.1 to 10 Hz
Sensitivity 10-4 m/s
Displacement measurement (with feedback)
Sensitivity 1 nm
Frequency range up to 5 X 10-2 Hz
Dynamic range
Velocity measurement mode 10-9 to 6.4 X 10-5 m/s
Displacement measurement mode 1-0.1 to (6.4-0.64) X 104 nm
Interrogation frequency
Velocity measurement mode 8 to 1 interrogation/s
Displacement measurement mode 8 to 1/8 interrogation/s
Objective
TV panorama of the martian landscape around the small station.
Method
Using a 60° lens, an image of a portion of the Martian
surface is projected onto a vertical CCD-array (1024 pixels); the
optical system is placed at the top of the station and is rotated by a
stepper motor (6000 lines).
MAIN CHARACTERISTICS
Spectral range 0.4 to 0.8 µ m
Image format 60 X 360° (1024 X 6000 pixels)
Focal length 10 mm
Distance from l m to infinity
ADC 10 bits, 10 to 40 kHz
Memory Mbit after compression
Minimum time for taking a panorama 0.5 to 1 hour
Mean time for taking a panorama 1 panorama/10 days
Power 2 W
Mean power 0.1 W
Mass 200 grams
Objective
Imaging with a resolution of 20 m to 1 cm during parachute
descent.
Main Characteristics
CCD camera 500 X 400 pixels
Dimensions
Optical unit (lenses, CCD, electronics) 50 X 50 X 100 mm
Electronics unit (image compression) 130 X 70 X 45 mm
Mean power 3.5 mW
Data capacity 16 MB
Mass
Optical unit 150 grams
Electronics unit 320 grams
Return to MSSS
Home Page